G35 Bonanza Carb Heat

[noslonlo]

The POH on a G35 Bonanza says no carb heat for normal landing unless required? Am I reading this correctly, and do you agree with this?

Thanks.

 

[mtrv]

The POH on a G35 Bonanza says no carb heat for normal landing unless required? Am I reading this correctly, and do you agree with this?
Thanks.

It's what a lot of carbed Piper POH's say too. Has to do with the fact, that the Piper's Lycoming carb is attached directly to the oil sump beneath the engine, which somewhat heats the carb.

The older Cessna's that used Continentals; don't get the pre-heating, but can generate slight more HP per cubic because of the cooler intake air.

And then of course, many pilots feel that carb heat is always warrented because that's what the instructor taught, or it's just what they're use too.

And then, when flying out of high density altitude airports, you have to weigh the danger of leaving carb heat in, versus having enough takeoff power, when carb heat wasn't required in the first place. In our high density altitude area, we never used carb heat as part of the landing proceedure in carbed Pipers such as the Warrior & Archer, unless it was felt that it's really needed.

The Piper POH even warns of pre-detenation in some cases.
As to the Bonanaza, I don't know anything about it's induction system.

IMO, the best all around way, is to have a carb temp gauge.

edit: re-reading, I see that you have both Piper & Cessna experience. I'll just leave this info, for what it's worth, or not.

 

[Loafman]

I had a G-35 for years and now that you mention it, I never remember using carb heat. The E-225 was a dry sump and didn't have an oil sump warming the carb. It had scavenge pumps and an oil tank near the firewall with an integrated cooler. Mine Bonanza had a Bendix pressure carb just like the twin commander I replaced it with. Pressure carbs are like having throttle-body fuel injection which does not require carb heat because the fuel is atomized with pressure instead of educted with a venturi. It's the venturi effect that creates the temperature drop that forms the ice. Just my 2 cents.